scholarly journals A Study of the Average Multiplicity and Multiplicity Distributions in Hadron-Nucleus Collisions at High Energies

1972 ◽  
Author(s):  
W. Busza ◽  
J.I. Friedman ◽  
H.W. Kendall ◽  
L. Rosenson
Keyword(s):  
Average Multiplicity ◽  
High Energies ◽  
Multiplicity Distributions

Characteristics of the total disintegration events of emulsion heavy target nuclei caused by O16 and 28Si nuclei at high energies

2012 ◽  
Vol 90 (12) ◽  
pp. 1267-1278 ◽  
Author(s):  
Mahmoud Mohery
Keyword(s):  
Gaussian Distribution ◽  
Linear Dependence ◽  
Average Multiplicity ◽  
Secondary Particles ◽  
High Energies ◽  
Heavy Target ◽  
Inelastic Interactions ◽  
Free Hydrogen ◽  
Multiplicity Distributions ◽  
Fireball Model

The present paper deals with the interactions of 16O and 28Si nuclei with emulsion heavy target nuclei (silver (Ag) and bromine (Br)) at 4.5A GeV/c. The results have been analyzed to identify interesting characteristics of the total disintegration (TD) events produced in these interactions. Events having a number of heavily ionizing particles Nh ≥ 28 have been selected in this study. The integral multiplicity distributions for the disintegrated particles from the target nuclei have been used to separate the inelastic interactions with the free hydrogen (H), the light (CNO), and the heavy (AgBr) nuclei. The average multiplicities of the different secondary particles emitted in these interactions have been compared with the corresponding ones of different projectiles nearly at the same momentum. The average multiplicity of the grey particles is found to increase with the mass of the projectile, while the average multiplicity of the black particles is found to decrease with increasing mass of the projectile; this result agrees with the prediction of the fireball model. Also, the dependence of the shower, grey, and black particles produced in the TD events on the mass of the projectile has been studied. Moreover, the dependence of the probability of the TD for the projectile mass as well as the target fragments has also been discussed. The results show that the multiplicity distributions of the shower, grey, and black particles present a Gaussian distribution. Finally, the linear dependence of the grey and compound multiplicities on the black, heavy, and shower particles has also been observed.

Features of relativistic charged particles produced in catastrophic destruction of heavy emulsion nuclei at 4.5 A GeV

1998 ◽  
Vol 76 (7) ◽  
pp. 559-566 ◽  
Author(s):  
P Singh ◽  
M S Khan ◽  
H Khushnood
Keyword(s):  
Poisson Distribution ◽  
Linear Dependence ◽  
Charged Particles ◽  
Average Multiplicity ◽  
Average Value ◽  
Multiplicity Distributions ◽  
Good Agreement ◽  
Fireball Model

Total disintegration events produced in 4.5 A GeV/c 12C--AgBr reactions are analysed to investigate the characteristics of secondary charged particles produced in such collisions. The results reveal that multiplicity distributions of grey, black, and relativistic charged particles agree with the Poisson distribution. The average multiplicity of grey particles is found to increase with the increasing mass of projectile, while the average value of black particles is found to decrease with the increasing mass of projectile. This result is in good agreement with the prediction of fireball model. Finally, the linear dependence of grey and compound multiplicities on black, heavy, and relativistic charged particles is also observed. PACS No.: 25.70

Information theory and multiplicity distributions at high energies

1976 ◽  
Vol 15 (15) ◽  
pp. 553-559 ◽  
Author(s):  
B. Carazza ◽  
A. Gandolfi
Keyword(s):  
Information Theory ◽  
High Energies ◽  
Multiplicity Distributions

NEW AMY AND DELPHI MULTIPLICITY DATA AND THE LOGNORMAL DISTRIBUTION

1991 ◽  
Vol 06 (03) ◽  
pp. 245-257 ◽  
Author(s):  
R. SZWED ◽  
G. WROCHNA ◽  
A.K. WRÓBLEWSKI
Keyword(s):  
Energy Dependence ◽  
Lognormal Distribution ◽  
Scaling Function ◽  
Average Multiplicity ◽  
Linear Functions ◽  
The Mean ◽  
Multiplicity Distributions ◽  
The Scaling Function ◽  
Skewness And Kurtosis

Multiplicity distributions for e+e−→ hadrons recently reported by the AMY and DELPHI collaborations are compared with the data obtained at lower energies. It is proven that the new data obey the KNO-G scaling and the scaling function can be described by the lognormal distribution. The dispersions are linear functions of the mean as for the data measured at lower energies and the standardized moments (such as skewness and kurtosis) are independent of the energy. The energy dependence of the average multiplicity is described by <nch>=β sα−1.

Multiplicity distributions and total cross section at high energies

1977 ◽  
Vol 16 (1) ◽  
pp. 139-141
Author(s):  
B. K. Chung
Keyword(s):  
Total Cross Section ◽  
Cross Section ◽  
High Energies ◽  
Multiplicity Distributions

On the scaling law of multiplicity distributions at high energies

1977 ◽  
Vol 39 (2) ◽  
pp. 301-309
Author(s):  
E. R. Nakamura
Keyword(s):  
Scaling Law ◽  
High Energies ◽  
Multiplicity Distributions

Characteristics of the total disintegration of AgBr nuclei by 24Mg and 32S nuclei at 4.5 A GeV/c

2000 ◽  
Vol 78 (10) ◽  
pp. 915-927 ◽  
Author(s):  
N N Abd-Allah
Keyword(s):  
Free Path ◽  
Incident Energy ◽  
Charged Particles ◽  
Mean Free Path ◽  
Average Multiplicity ◽  
Multiplicity Distributions ◽  
Inelastic Mean Free Path ◽  
Good Agreement ◽  
Fireball Model

The interactions of 4.5 A GeV/c 24Mg and 32S nuclei with emulsion were studied. The experimental inelastic mean free path for these interactions is compared with theoretically calculated values. The average multiplicities of the emitted secondary charged particles for total disintegration were investigated. Total disintegration events are analysed to investigate the characteristics of secondary charged particles produced in such collisions. The results show that the multiplicity distributions of relativistic charged particles agree with the Gaussion distribution. The average multiplicity of grey and black particles is in good agreement with the prediction of the fireball model. The probabilty of total disintegration of Ag(Br) nuclei by different projectiles is nearly independent of the incident energy. PACS No.: 25.70

Multiplicity distributions in nucleus-nucleus collisions at high energies

1976 ◽  
Vol 111 (3) ◽  
pp. 461-476 ◽  
Author(s):  
A. Białłas ◽  
M. Bleszyński ◽  
W. Czyż
Keyword(s):  
High Energies ◽  
Multiplicity Distributions

Statistical hadronization and multiplicities in high-energy hadron–nucleus collisions

2017 ◽  
Vol 26 (03) ◽  
pp. 1750006 ◽  
Author(s):  
S. Sharma ◽  
M. Kaur ◽  
S. Thakur
Keyword(s):  
Statistical Mechanics ◽  
Particle Production ◽  
High Energy ◽  
High Energies ◽  
Gamma Distributions ◽  
Charged Particle Production ◽  
Tsallis Distribution ◽  
Multiplicity Distributions ◽  
Statistical Hadronization ◽  
Energy Hadron

Concepts from statistical mechanics and ensemble theory are applied to study the characteristic properties of charged particle production in hadron–nucleus collisions at high energy. In the present study we utilize the predictions from different approaches using statistical mechanics. The Tsallis q-statistics is used to study the regularity in multiplicity distributions in hadron–nucleus collisions at high energies as one of the interesting options. Gamma distributions and a possible microcanonical generalization of Tsallis distribution have also been exploited to describe the data.

Tsallis nonextensive entropy and the multiplicity distributions in high energy leptonic collisions

2016 ◽  
Vol 25 (06) ◽  
pp. 1650041 ◽  
Author(s):  
S. Sharma ◽  
M. Kaur ◽  
Sandeep Kaur
Keyword(s):  
Experimental Data ◽  
Multiplicity Distribution ◽  
High Energy ◽  
New Approach ◽  
High Energies ◽  
Nonextensive Entropy ◽  
Tsallis Distribution ◽  
Multiplicity Distributions ◽  
Better Than

The nonextensive behavior of entropy is exploited to explain the regularity in multiplicity distributions in [Formula: see text] collisions at high energies. The experimental data are analyzed by using Tsallis [Formula: see text]-statistics. We propose a new approach of applying Tsallis [Formula: see text]-statistics, wherein the multiplicity distribution is divided into two components; two-jet and multijet components. A convoluted Tsallis distribution is fitted to the data. It is shown that this method gives the best fits which are several orders better than the conventional fit of Tsallis distribution.

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